The PC and PS are practyicaly the same game. MKT PC is to MKT N64 as UMK3 is to MK3.
There are less flashy things in the PC version compared to the N64. But the PC does what the N64 doesn't, gives you a realy Trilogy. The N64 left a lot of characters out. Goro, Kintaro, Un-masked Sub-Zero, And alternate version of Rayden, Jax, Kung Loa, and Kano. Alternate is the older version, the standard is the newest version. MKT PC also has more Backgrounds.
PC MTK is the true MKT. It has at least one version of any character from MK1-3. The N64 is basicaly, although a Trilogy, a Jazzed up UMK3.