UB 200k - AK v CDBR 4bShove

[ASPoker8]

Blinds are 20-40
CDBR has 2100
I have 2400

10 handed.
UTG and UTG+1 fold
CDBR opens to 110 UTG+2
MP and MP2 fold
I 3bet to 360 from the Hijack
Folds
CDBR shoves for 2100 after 4-5 seconds of thought


Reads: It is very early, not much has happened at our table. He would know me on ASPoker8, but does not know my UB screenname most likely. I have only raised one hand so far, and folded to a 3b from the BB. I have played generally tightish.