My girlfriend does our deserts and has done pretty well. Cheesecake definitely seems to win more times than not when we hear what the winners cook. I would say the exception to this would be where the desert category isn't just "desert" and it can be any kind of flavor. The desert competitions where the desert is "ingredient specific" such as peach, apple, strawberry etc is where maybe a more traditional desert wins as opposed to just making whatever cheesecake you want. So if apple is the category then apple pie or apple cobbler might have a better chance of winning.
So strawberry could be strawberry shortcake (mentioned above), strawberry tort, strawberry ice cream, stawberry cake, etc. But now that I think about it strawberry cheesecake does sound good