Anybody would get a sore stomach after eating that much.
Most people would have a stomachache if they ate as much as you did just now.
ーAnybody would get a sore stomach after eating that much.
「あれだけ食べたら誰でもお腹痛くなるよ。」
anybody would get a sore stomach で「誰でもお腹が痛くなるだろう」
ーMost people would have a stomachache if they ate as much as you did just now.
「あなたが今食べただけ食べればほとんどの人はお腹が痛くなるよ。」
most people would have a stomachache で「ほとんどの人はお腹が痛くなるだろう」
ご参考まで！
カナダ 
