On Bubble: small pair facing push

[Bill Poker]

Here is an example:
UTG: 1300
UTG+1: 3500
SB: 1000 (villain)
BB: 2200 (HERO)

blind=150/300.

HERO has a small pair (22-66).

Fold to villain who pushes, and he pushed in previous 3 rounds on SB too when Blind=100/200, so his range could be any 2, or maybe a little better than any 2. he is a regular 2+2er.

do you call here?

I had problem calling this push since it is at best a coin flip. on the other hand, if I lose, I still has 1200 left.

your input is highly appreciated.