Typeless damage bonuses

[Sanmei Long]

What types of multipliers, if any, are typeless damage bonuses subject to? There aren't many examples that I can find, and they are always written sparse in details. Examples in spoilers:

Spoiler:

Master Chymist:

Brutality (Ex): At 3rd level, a master chymist's taste for violence leads her to strike more powerful blows with weapons easily mastered by her bestial mind. At 3rd level, a chymist in her mutagenic form deals +2 damage when attacking with simple weapons and natural attacks. This bonus increases to +4 at 7th level and to +6 at 9th level.

Spoiler:

Brawler archetype Mutagenic Mauler:

At 6th level, a mutagenic mauler gains a +2 bonus on damage rolls when she attacks in melee while in her mutagenic form. This bonus increases to +3 at 11th level, and to +4 at 16th level.

None of these detail the properties of the bonus, so I'm uncertain how they are counted when tallying damage. For instance, are they multiplied on a critical hit? Do they get multiplied by 1.5 when you use a two-handed weapon? Do they get multiplied on a Mythic Vital Strike? :\

[John Murdock]

all flat bonus (typeless or that have a type) are multiplied, if your weapon deal x4 dmg in a crit then your +2 or +3 or +4 is multiplied by that ammout and only str bonus is multiplied by 1.5 for two handed weapon

[Sanmei Long]

Danke~

I had a late night math seizure and forgot if even Competence bonuses got multiplied on a crit.

And now I'm trying to figure out how Mythic Vital Strike handles crits with Mythic Power Attack, besides "like whipped cream being flung through an industrial fan." Is there such a thing as enough sleep to process this sort of thing without wanting to take a break and read The King in Yellow as a refresher?

I'm trying to calculate a Heavy Pick (x4 crit) using Mythic Vital Strike (basic) and Mythic Power Attack (at -3/+9). The character has a STR modifier of +12 and the Heavy Pick has a +1 enhancement bonus. The weapon is being wielded with two hands. Here's what I come up with:

Basic attack: 1d6+19
Basic attack crit: 4d6+76

Power attack: 1d6+32
Power attack crit: 4d6+180

Vital strike: 2d6+38
Vital strike crit: 5d6+95

Vital strike with power attack: 2d6+64
Vital strike with power attack crit: ???

Oh hell.

Weapon die starts at 1d6; Vital Strike increases that to 1d6 + 1d6. On a crit, only one of these is multiplied by x4, becoming 4d6 + 1d6, or 5d6. So far so good.

12 STR * 1.5 is 18; plus 9 power attack bonus *1.5 = 13.5 rounded down to 13; plus 1 enhancement bonus, total of +32.

Mythic Vital Strike multiplies all bonuses by the number of bonus dice, which in this case is one extra, so it becomes 32 + 32 = 64.

So a normal vital+power attack is 2d6+64.

On a crit, Mythic Power Attack doubles its bonus before being subjected to modifiers, so 13 becomes 26. 18+26+1 totals 45 and then is multiplied by x4 (because Heavy Pick) to be 180. The damage dice are also multiplied by x4 for a total of 4d6+180 altogether.

Then the extra dice is added and here's where I'm not entirely sure about the bonus damage. If the bonus dice also receives double the power attack bonus, then the total would be 5d6+245; if not, then it would be a "mere" 5d6+212.