Why Primus ran out of ammo [11/24/16]

On 11/24 Primus lost a Parasite Eve run because he ran out of ammo on the ultimate being. I was curious to see if he missed something major, made a mistake (both of which are unlikely to cause such a thing,) or got bad item drops. So I compared his run to Turbodog702's current record time to assess where things went wrong. This starts in the Museum on Chapter 5.

[Ptero / raptor OR Ptero / scorpion]

- Primus fought Scorpion
	x Started with 128 shells
	x Items after fight were Med. 3 and Cure-P

- Turbo fought Raptors
	x Started with 146 shells
	x Items after fight were Med. 3 and +30 ammo

Directly after the T-rex animation cutscene

[Ptero / Pill bug]

- Primus
	x Ammo is 113
	x Items after were Med. 3 and +15 ammo

- Turbo
	x Ammo is 163
	x Items after were Med. 3 and +15 ammo

[Ptero / Raptor / Pill bug OR Ptero / Pill bug x2]

- Primus fought pill bug x 2
	x Ammo is 112
	x Items after were Med. 3 x2 and +15 ammo

- Turbo fought raptor
	x Ammo is 165
	x Items after were Med. 3 and +30 ammo

[T-Rex] (Skipped tricertops cause w/e)

- Primus
	x Stars with 107 shells


- Turbo
	x Starts with 182 shells

[Eve 4] (There is two encounters before this, hence why their ammo isn't much decreased from T.Rex)

- Primus Starts with 104 shells

- Turbo
	x Starts with 178 shells

[Ultimate Being] ( Both used 36 shells for the Eve 4 fight)

- Primus
	x Starts with 67 shells
	x Phase 2 begins with 46 shells
	x Phase 3 begins with 11 shells

- Turbo
	x Starts with 141 shells
	x Phase 2 begins with 121 shells
	x Phase 3 begins with 91 shells
	x Phase 4 begins with 65 shells

[Conclusion]

You can see that the ammo consumption is relatively the same throughout the end game, with a difference of 1-5 shells. This is based purely on the randomness of critical hits and/or misses. Judging by the 3rd phase of the Ultimate being it appears the Primus was roughly 25 shells short of being able to finish the fight without any time loss. Due to encounters he missed 45 shells in comparison to Turbo, which would have been plenty to finish the run. Another option for 30 extra rounds would be grabbing two chests in Central Park during Chapter 2, with minimal time losss. (One directly after the first tool chest and one in the gazebo.) Out of curiosity I checked ammo at the beginning of the Centipede fight in the Subway as well, Primus began with 140 and Turbo began with 147 - so up to that point there was virtually no difference in ammo.

To me it appears Primus didn't do a whole lot execution wise to warrant running out of ammunition, it was just the games way of saying better luck next time. Cheers.