Default Difference Between the Roms

Hey Ive had this s3 mini for a little while now and have never had this much choice in roms so I was wondering if anyone could explain the differences between them ?
HTC Desire X running mysencedx+ RC2.0 and infinityshooter's kernal ( Broken screen )

Samsung Galaxy S3 Mini (GT-I8190N) running PAC MAN 4.3.2 with included kernal