Gmod 9 Portal Mod VS Gmod 10 Portal Mod

Some people have Gmod 9 and Over half of them have Gmod 10, well everyone knows what portal is... But 2 years ago (When portal was being made 2006) Nerds heard about portal and made a Handheld Portal Device for Gmod 9. After the Release Of gmod 10 and portal, people made Portal guns for gmod 10, these guns were made by the same creator, just differnt versions of the mod.