Since the K98 has bad accuracy on move the total moving accuracy of the squad is not that great and inline with other infatry with "carbine" rifles like Penals.
There's no "LIKE" penals. Penals are in a league of their own on the move, noone comes close. The downside is they suck in all other scenarios, no cover, bad RA, etc.
3 Kar98s don't matter, once you get a blob of 2-3 g43 fusiliers going you can get some crazy wipes, especially with their new buffed grenades. Once you get on retreat paths with them you can get wipe after wipe. They're better than Riflemen in that regard, especially with no need to sidetech for a nade and less muni investment.