That's interesting...to me the Palladium is a typically cold place, I usually keep my jacket on. I've been to some memorably cold shows there but I can't remember a time when I was boiling up. To me places like Middle East Downstairs are more likely to get overheated, for obvious reasons.
At any rate, I don't regret skipping this one even though I still love Sonata. I have seen them 4 times before and despite loving their music I never thought they were that amazing live. I've also seen Arsis three times in the past but I haven't been into their albums lately.