@poojas You knew this was coming, everybody pretty much loves both and have already thought of which one is better but I think both are amazing in their own ways!
Since I was a child I always loved both and still do and I've always wondered who would win between Ash and Taichi.
Ash with the unlimited pokemons he has caught during all his adventures against the trust based between Taichi and Agumon. It seems unfair but Agumon gets ever stronger with what Taichi feels (at least that's how I look at it) so I believe it would be amazing if these two has a "battle".
These are like the The Simpsons vs Family guy, and even those two had a cross-over. I dare anybody to tell me this wouldn't be EPIC! With so many similarities these would be one of the most interesting cross-over ever (or is it just me and my inner child speaking?).