I've had this conversation enough that I'm putting this thread together to show the advantages of the 5e fighter if you converted from 5e to Pathfinder.
Fighter (Champion)
Alignment: Any
Hit Die: d10
BAB: Full
Good Saving Throws: Fortitude
Class Skills: Acrobatics (Dex), Craft (Int), Climb (Str), Fly (Dex), Handle Animal (Cha), Intimidate (Cha), Knowledge (History), Knowledge(local), Knowledge (Nobility), Linguistics (Int), Perception (Wis), Profession (Wis), Ride (Dex), Sense Motive (Wis), Survival (Wis), Swim (Str), Use Magic Device (Cha).
Skill Ranks per Level: 6 + Int modifier
Weapon and Armor Proficiencies: A fighter is proficient in all weapons (exotic, martial, and simple), armor (heavy, light, and medium), and shields (including tower shields).
Fighter Training (Ex)
At 1st level, a fighter is capable of tremendous feats of combat prowess:
- A fighter may use their Dexterity modifier with a light weapon or a weapon with the finesse special weapon property as if possessing the Weapon Finesse feat. When using a light weapon or a weapon with the finesse property, they may add their Dexterity modifier instead of their Strength modifier to the damage roll. If an effect would modify their Strength modifier to the damage roll modifies their Dexterity modifier as well.
- A fighter may throw weapons at his full normal rate of attacks (much like a character with a bow) as if possessing the Quick Draw feat. In addition, the fighter may use their Strength modifier instead of their Dexterity modifier when making an attack with a thrown weapon. A fighter may draw a hidden weapon as if it was not hidden.
- A fighter does not risk attacks of opportunity when making unarmed attacks or performing combat maneuvers. They also avoid attacks of opportunity when moving within a creature's threatened area as long as they do not leave it. A fighter is considered as having Dex 13, Int 13, Str 13, Combat Expertise, and Improved Unarmed Strike for the purposes of meeting the prerequisites of combat feats.
- A fighter may add their Dexterity modifier to the damage rolls of ranged attacks.
A character that takes their first level of fighter at any point other than character creation may only choose one benefit from the list, and does not gain the ability to wear heavy armor or gain proficiency in exotic weapons.
Fighter Background
At first level, a fighter chooses two skills to add to their class skill list. Once selected, these class skills can't be changed. A fighter also gains Additional Traits as a bonus feat.
Fighter Combat Style Feat (Ex)
At 1st level, a fighter must select one combat style to pursue like a ranger. This expertise manifests in the form of bonus feats gained at 1st, 6th, and 10th level. At these levels the fighter gains all feats available from the combat style at that level. Once a fighter selects a ranger combat style, it cannot be changed.
A fighter chooses a second combat style at 10th level, gaining all feats available to that combat style.
Second Wind (Ex)
Beginning at 1st level, fighters have a limited well of stamina to draw on to protect themselves from harm. With one use of this ability, a fighter can heal 1d10 + their fighter level of damage. Using this ability is a swift action. A fighter must wait 1 hour before using this ability again.
Action Surge (Ex)
Starting at 2nd level, a fighter can push themselves beyond their normal limits for a moment. Once per day on their turn, they can take one additional standard action in a turn. Starting at 17th level, they can use this ability twice per day.
Improved Critical (Ex)
At 3rd level, any weapon that threatens a critical hit on a roll of a 20 now threatens on a roll of 19-20.
Ability Score Improvement (Ex)
Starting at 4th level, and at every two levels thereafter, a fighter may increase one ability score by +1. This is a typeless, nonmagical bonus that cannot be changed once made.
Press Advantage (Ex)
Starting at 5th level, a fighter can take the full attack action as a standard action instead of a full round action.
Remarkable Athlete (Ex)
Starting at 7th level, a fighter can add half their level to any Strength, Dexterity, or Constitution check or any untrained skill using those ability scores. In addition the fighter always adds their fighter level to all Acrobatics, Swim, and Climb checks instead of half their level even if they have ranks in those skills.
Indomitable (Ex)
Beginning at 9th level, the fighter may reroll a failed saving throw once per day. They must use the result of the new roll even if it is lower than the first roll. The fighter gains an additional use of this ability at 13th level and a third use per day at 17th level.
Superior Critical (Ex)
At 15th level, all weapons a fighter holds is considered to have a critical threat range of 18-20.
Survivor (Ex)
At 18th level, a fighter is capable of living through any hardship. They gain the fast healing equal to 5 + their Constitution modifier. If a fighter falls unconscious, they lose this ability until they are conscious again.
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I'm leaving this as OGL only at the moment.
Doc for Edits, Archetypes (Eldritch Knight/Battle Master)
