If greater than batch files

try this:

if 3 gtr 2 @echo "biggger"

This outputs:

"biggger"

The other operators are:

EQU – equal
NEQ – not equal
LSS – less than
LEQ – less than or equal
GTR – greater than
GEQ – greater than or equal

Reference

• Microsoft TechNet | Windows Server 2012 | Command-line Reference: If (Archived here)
• SS64: If (Archived here)