Well flown escorts have trouble killing other well flown escorts, well flown cruisers don't even get a look in.
I'm an escort captain with a focus for PvP and I'll say this - My brethren and I are way way too tanky. Cruisers aren't remotely a danger and for the most part can be ignored except for when they're cross healing.
Agreed. I can hold my own against an escort for a while (in my Sovvy), but it is very rare that I destroy one, at least these days, and I've DPSed the hell out of my ship. When I fly my escort, my cannons usually just melt through shields.