I tried to run this game on PAL, to confirm what I already believed.

Summary:

• IGT on PAL are definitely better than NTSC
• PAL is definitely slower than NTSC (you loose 2-4 seconds per level)
• The exit dash timing is off
• You hear the music is playing slower and certain things (like falling) feel definitely slower

So nothing really surprising to me, but a confirmation to destroy any doubts. Just wanted to share my findings. Video here:

None of these things are new. Just saying.