[quote=@PKMNB0Y]
Was Over The Nexus the one where you had to Tag Duel to beat that one Infernity player? Because that mess gave me more than enough trouble, and I can't remember which DS game it was where I had to manage that problem.
[/quote]

I think you're misremembering it slightly- you never had to tag up to beat Kiryu, but you [i]did[/i] have to tag up to beat Lotten. A guy playing a burn deck. Who starts with 10 cards. And has 8000 > 0 openers.

And your AI partner has absolutely no way to mitigate this.

Yeah, that duel was stacked as fuck.