Well, they're different overall sizes for a start.
I take it you're going to use this to make your own MFT-style table?
The holes are essentially the same: 20mm holes on 96mm centres, however the hole size is very slightly different. I don't know the exact hole dimensions off the top of my head, but the holes in the older MFT800 & 1080 tops are slightly smaller than those on the newer MFT3 (we're talking a couple of tenths of a mm). Not a big deal in most cases, but the 20mm PVC pipe I use for dogs is a nice tight fit in my older 1080-based tables, whereas they fall through the holes on my MFT3-based table.