[grylsyjaeger]

I wouldn't go as far to comparing a Garand to say a Springfield musket. The weaponry enhancements are hardly that revolutionary. What, an extended magazine, longer barrel (not always a good thing) and higher damaging ammunition?

It's more akin to say the German forces of WWI facing off against Commonwealth forces. The Gewehr 98 vs the Short Magazine Lee-Enfield. Both great rifles but each having their own share of advantages and disadvantages.

The Gewehr and it's 8x57mm round offering higher damage, penetration and longer effective range than the .303 Brit.
The Enfield's ten round (box) magazine compared to the internal five round magazine of the Gewehr.
The Gewehr is regarded as a more accurate rifle but longer whereas the Enfield is a handier and faster cycling action.

All good features on their own, of which would warrant a change/redesign in the standard issue rifle of either side.