If the lower leg braces being referred to are the horizontal pieces (one with cable drag chain on it,) then those do almost nothing for stability/strength. They just keep the legs parallel. If the legs are anchored down (even if it's just friction with a rubber pad,) they really aren't necessary. You really need triangular structures for strength. The gussets in GME's build look like they add more strength than those cross pieces on the yellow one.