What arcade port to DC would take the least amount of time to beat on their default settings?

I was pondering this today, as the DC has many arcade ports which are quite short to do a playthrough from start to end.

Most of the shmups, including gigawing 2 and Chaos Field would probably take about 20 minutes.

Many of the fighting games: Soul Calibur, Last Blade 2, etc, would also probably take 20 minutes or less to run through to the ending with 1 character. Cannon Spike is relatively quick too.

Then I was thinking about how Guilty Gear X has the instant death moves ... so theoretically if you could connect with all of them on every fight, you could probably beat the game in under 10 minutes....


Anyone else want to weigh in?