Matter of fact, read this:
Wrestlemania 23
Interpromotional Money in the Bank Ladder Match: Ken Kennedy (SmackDown!)
defeated CM Punk (ECW), King Booker T. (SmackDown!), Fit Finlay (SmackDown!),
Edge (RAW), Randy Orton (RAW), Matt Hardy (SmackDown!), and Jeff hardy (RAW) (19:10) in an "Interpromotional Money in the Bank Ladder" match...
We need to agree to disagree on this one, because right now we're going on opinion and not fact. The question to be asked: if you don't win a match with multiple contenders, does it count as a loss, or a no contest because you weren't the winner? According to the official wrestling records, Edge was defeated by Ken Kennedy.
However, let's explore this logic. Let's take a look at the TLC matches at Wrestlemania: Do the Hardys and Dudleys both have two losses at Wrestlemania because of it? They weren't one-on-one or two-on-two contests. What about a triple threat match? By some logic, that means Kurt Angle didn't lose TWICE when he lost the Intercontinental title when Benoit pinned Jericho then the European title when Jericho pinned Benoit at Wrestlemania 16. The official record says this:
Wrestlemania 16
Intercontinental Title and European Heavyweight Title Match (Three Way Match, Best Two out of Three Falls): Chris Benoit defeated Kurt Angle and Chris Jericho to win the Intercontinental Title when Benoit pinned Jericho in the first fall (8:13). Chris Jericho defeated Kurt Angle and Chris Benoit to win the European Title when Jericho pinned Benoit (13:52)
http://www.100megsfree4.com/wiawrestling/pages/wwf/wwfwm.htm
Now, some people are right. Edge has never been pinned, has never submitted, never been DQed, and never been counted out. Ladder matches, though, don't give you those options, same as Casket matches, Cage matches, and table matches. You are simply defeated because you do not fulfill the required action to win. Same with triple threat matches. Even if you weren't pinned or gave up, you can lose the title, meaning that you were defeated in some way. Not winning means you are not undefeated.
As a heel, Edge can fully go with, "I've never been beaten at Wrestlemania" and make it convincing because he can bitch about Money in the Bank not counting the way everyone does. Officially, Edge is 5-1.