Yeah that's what I've had to start doing. Anyway, I just got my first legendary. I've been wanting Daniel Bryan this whole time and have yet to get one better than uncommon so I've never used him. I've also been wanting a better diva for a long time. I guess the game decided to compromise, so it gave me a legendary Mrs. Danielson. This next KotR is going to be ridiculously easy.
Edit: Actually playing the best card first makes me lose about 1/3 to 1/2 of the time, as my cards are so unbalanced that if I lose with my pro epic, I'm almost guaranteed to lose the match. The better strategy for me is to play the best card only if it's that card's strength. For instance, if it's asking for strength, toughness, or a combo of both, I'll use Kane. Otherwise, I'll throw a lower card out there and hope for the best. If I lose, I can usually make it up later with Kane or another card. For now, though, I'm going back to slumming it until I want to start KotR (I'm going to wait until about 11 AM PST so that the elimination rounds start around 8 AM on Sunday, as I don't want to have to wake up early just to manage boosts). By "slumming it", I mean that I replaced my Pro UR Andre and Legendary Brie with commons to make winning Exhibition easier. It drops me back down to Epic+, where I can win almost every time. I accept that I'll always lose once, but the other 2 can use no more than 3 wrestlers, so if I make those 3 as good as possible and allow for a tag boost or at worst a tag neutral, I'll usually have the upper hand unless I run into somebody doing the same thing or somebody who happens to have a maxed out Legendary and only decent other cards.