you used mame, what do you expect?
I expect a near perfect emulation of many of the older arcade games, including games I have never seen, or those I am never likely to see in person ever again. Every time I run MAME, I find something new.
I expect MAME to be a spot-on reference for just about any game I can think to look up. What was the resolution, the monitor orientation, scan frequency, what CPU did it use, CPU speed, was the game cloned by another company? MAME is the best video arcade game reference source in existence, and is relied upon by most arcade information websites (including KLOV).
I expect to be able to load up my favorite games just about anywhere and anytime, and have fun playing them. No, it isn't quite the same as the original machine, but it is still fun. And with the proper monitor, controls and cabinet, it *can* be the same as the original machine, as the emulation on some games is so good as to be indistinguishable from the original. The popularity of the rather badly done N-in-1 boards shows that.
But mostly, I expect a lot of fun from MAME.
Except maybe from Kangaroo.