In all honesty it was the first time I'd played this clone and it's a strange mix of difficulties. It seems easier to progress and score higher, yet some parts seem so much better or difficult. For example:
1) The hammer does not flash before it expires, so it's more difficult to time.
2) The barrels have some random activity, such as rolling uphill at the end of platforms.
3) The barrel stage has nice pogressive changes, such as the girder gaps and hammers you can't grab (something that caught many out trying to).
4) The elevators are different and move much faster from the start.
5) The cement factory (or pie factory as it was referred), is quick if you move fast, but jumping the pies is dangerous due to very fast conveyor belts.
6) The flames on the rivet stage are the same as the one on the barrel stage, but move much faster than the original flames.
I'd love to get good at both games, but platformers make me angry when you die through a silly mistake or control slip!