Makes sense.
I can't discount AK at least from an unknown villians 4bet range & his 4bet size is so small < 2.5x 3bet with 6$ from CO in pot to that its a break even play with implied odds to set hunt on flop. (You have to call 30 to win +- 230, 7.5-1)

Then if an A or K doesnt flop you're almost 50/50 vs his range & with the money in the pot its an easy flop call.
(I wouldnt shove a non-AK flop because you're either way ahead (of AK)
or way behind (AA/KK) so if he's only drawing to 6outs you'd want to give him a chance to make a mistake & shove turn.)

- Also you'll still suck-out 8% if the time from flop-river & he could of thought you were 3betting light as CO has fairly wide range so his 4bet could be weaker than the range we've assigned a small% of the time
which would lead me to call and take above line even more.