How do I make this anime video look so good upscaled from DVD to 720p

This is the upscaled 720p:
http://limelinx.com/d9k52

I tried looking at the encoding parameters using MPC-HC but looks like that's a compressed re-encoded file, probably the original uncompressed 720p looks even better.

This is a 576p version of that:
http://limelinx.com/filje

They're both pretty good and I think that both were (probably) encoded from a 480p VOB source (because it's a DVD rip). You can see the difference using these snapshots in full-screen mode:

Snapshot 720p PNG
Snapshot 576p PNG

How do I obtain the same good results of that 720p if I want to upscale a 480p VOB? I'm really a beginner and so far I've used only MeGUI, do I need more programs or I can do everything just with this?

If you want to see the file I want to upscale, I'm uploading it now and I'll post the link later (my upload is kinda slow and it's 200 MB file). I'd like to convert it from MPEG2 480p to AVC 720p, using x264 at 10-bits.

Thanks in advance!!