You might be visiting a hospital next if you planned to eat Alice's bento several hours later. Keeping sushi in RT or even higher for hours doesn't sound like a good idea. She had absolutely nothing in her presentation that would deal with that problem. Even the initial cooling was only for the show. Souma's multi-compartment stainless steel thermal bento container looked like it would cost 50 bucks at the absolute minimum, most likely a lot more, so I doubt it would ever leak.

Souma won this easily and unquestionably. But I still enjoyed watching Best Girl Alice very much.