wow! you were so efficient! last time (in Tokyo Kidzania for 1/2 day), my kids did 4 jobs only and couldn't hv time to open the bank account. there were so many people queuing up. last year we went to "Baby Boss" as well, they involved in 11 jobs for a whole day.
comparing the 2, I like the one in Tokyo more than Taipei. the costumes in Tokyo look better and the Kiddo (money) they earned could use in the supermarket whereas that in TP didn't accept.
Nevertheless, my kids enjoyed both very much and we (as parents) were busy to plan for their schedule.
so all depends on if you have better plan other than Baby Boss and if you want to spend so much time for the kids.
if that's food, I can't say much. and by comparison, I mean the kids won't find it less enjoyable. but in terms of comprehension, i guess going to taiwan is much better for my kids - at least they understand Mandarin. My daughter was able to talk to the staff leading each activity, asking questions, and making friends with the local kids. She could follow the staff's explanation of each profession. For my son, because he was a bit too young (not quite 3), some of the walk-through was just jibberish to him. He couldn't enjoy it as much as my daughter (4.5 yo) as a result of language as well as his tender age. Hubby actually felt it was quite educational. So even though he felt bored there, he agreed to go back on the second day.