By my own complaints, it would have been D-tier, but that felt too extreme as Sleep+Seed helped and I cannot possibly suggest dropping something by 2 tiers at once. I may have stronger opinions on route clearing than others, yeah. I have a small speedrunning background as well, I assume I cannot really turn that off while doing ingame runs. I consider clearing routes twice as fast as a bigger ingame efficiency compared to beating major bosses 20% easier. My major issue with Bulbasaur is just that it slows down gameplay too much. Efficiency includes effectiveness and time and Bulbasaur, while capable, just does its thing in too much time to be called efficient. Although if we talk about effectiveness alone ... yes, it is effective to use for sure. It's kind of the same thing as to why lots of late game dragon types are low tier, because while capable, they waste time. If they waste time leveling up or waste time clearing trainers (even if they do so without major issues) ... for me it's just the same kind of major flaw regardless.