It wasn't as much Lita, as much as what he did to Lita...
lol but honestly, the Matt Hardy feud and pairing with Lita led to the beginning of the Rated R Superstar. That in itself puts it waaaay above anything he did with Vickie. With that pairing, they played off each other. With Edge and Vickie (irl), being paired with Edge made Vickie into the heat magnet she is today, whereas it didn't do much of anything for Edge.
Oh and at that segment, Edge wasn't staring at Lita's boobs. Lita's boobs were staring at Edge's eyes. Dem eyes.
Do have a link to where Jericho said that?
You Think You Know Me? The Story of Edge. Go buy, you cheap whore you.
Edge was an established main-eventer and a former multi-time World Champion when he was with Vickie and he really didn't need her at all, it was also (as someone else said) one of worst periods in his career.
Absolutely not. The feud with Undertaker is easily one of his peaks and one of the greatest feuds in Smackdown history, you're out of you're mind. Awesome matches, and one brilliant ring promo with Mick Foley in particular that ended up tying in to their HiaC match...
Yeah, like I said. You're out of your mind.