Your read on villian

[microbet]

full table second round of $22

I'm in late position and there is 1 limper before me.

I have about 750 chips and I raise to 100 preflop.

Villian in SB has 525 chips and reraises to 300, leaving himself with only 225.

Do you read this as villian being very strong and trying to encourage a call or villian trying to leave himself with some chips in case it doesn't work out?