MG is a much higher quality model than the 1/60. Scales do not determine the quality. HG/MG/PG can be used to reference. While people keep calling 1/100 HG I don't know. The HG models were built to 1/144 scale. I am trying to think of a bandai 1/100 that says HG on the box. MG are all 1/100, and PG are 1/60. The higher the grade the higher the quality in almost all cases. A few models got some decent HG although haven't made it to MG or PG.

If you want to customize your model and plan to make parts and are serious about modding it. I'd almost say go with the 1/60 since you will be rebuilding most of it anyways. But normal kits go like I stated above. The MG is gonna be better than that 1/60 detail wise just smaller scale wise.

So basically PTX-003C you don't do the MG or PG becuase they are too hard for you to make better. I would say that about sums up my point I was trying to make. Sure it does take skill to improve the HG to make them like the MG quality. It takes even far more skill to improve on the quality of the MG or PG. If you can't agree on that then I don't understand why you bother to even argue since it debunks your whole point.