IP Amount Inquiry

So I just finished a game which should've rewarded me with exorbitant amounts of IP, but I, without thinking, I quit the after game lobby screen and didn't get to check how the IP was divvied out. Then a few minutes later I check the after game review in the client and it says I only got +354 -- still a good bit, but I'd expect to see >400.

To better explain I should've gotten:

1. The IP you normally get from a normal game +75ish
2. First win of the day +150
3. I was in a 5 man pre-made so the pool party team-up-IP-reward +75 again
4. Someone used a battle boost +100

Now this is all explained if I just got low base IP from the match (52) but yesterday I played a game where I earned 440 IP without even needing the "extra" extra IP from a battle boost, so I guess I was just curious (maybe something out of this long list of things conflicted with another.)