I like the prequels, and my usual response to anyone who gives me shit about it is never "well, the OT sucked too"... my response is "fuck you, I'll give a damn what you think when you think like I do". I'm a real teddy-bear that way.
I have never heard anyone defend their like of the prequels by bashing the OT. (I'm not saying it doesn't happen, I'm just saying that in my years of Star Wars fandom, I've never once heard that.) I'd pretty much have to slap anyone that said that. I mean, like whatever you want, but don't try to elevate it beyond what it is. I loved the Doom movie, but I'm not going to try to butter it up as anything other than an intellectually-vapid action flick.