If what dman said is true, then that shows Paul's at least a halfway decent strategist. Why the writers have to ruin that by forcing all these powerhouse Pokemon on him is beyond me. Still, if it comes down to strategy, Ash has proven time and again that he has the right head for strategy that has helped his weaker Pokemon gain an edge over stronger opponents, so I'd give this battle to Ash. Actually, I'd give it to him anyway, since a loss would prompt Paul to bring out much stronger reserves for the League. Aggron, anybody?
Please stop complaining about Pikachu losing to "weak" Pokemon at the start of each new region. Its power is drained at the start of each new region, and anyway, it's equally bad storytelling for Pikachu to plow through all of its opponents.