If I try hard, I think I can force the 110 fuel canister all the way into my SP600 pot -- right side up -- but the inside of the pot will probably be all scratched up, and I may never be able to pry the canister out again.
OTOH, the fact is that I can fit stove, lighter, small towel and fuel canister all comfortably inside my SP600 (with canister resting on top of the stove in the upside down position) -- and cover securely with my homemade lid -- with nothing protruding out. That's all I care. For me anyway, I don't need (or want) an "oversized" SP600. What for -- except to take up more pack space -- even if just a little bit more?
BTW, if this reads sarcastically, it's just my attempt in humor -- no offense intended! :)