Trash zoan my ass. Prior to Gear 5, Luffy's DF was also merely shitty paramecia gomu gomu no mi.
Point still stands, Luffy spent 10 years and still couldn't do shit with his gomu gomu, not even gear 2. Kaku got his fruit 2 years ago and learned awakening already which is Gear 5 equivalent.
Don't bring haki there. It makes Luffy the idiot even worse. He spent 2 years on haki training and left it without FS, without advanced CoA nor advanced CoC. What a dumbass wasting 2 years training only for basic haki.
Gomu gomu is not you average fruit.
Luffy had to "die" to awaken it.
Spot projecting the Idea that Kaku is more of a prodigy than Luffy, it makes you look dumb (no offense), Luffy is 19 and a literal Yonko.
Even Akainu advised Lucci to go against him.
The fact that people unironically think Kaku is more of a prodigy than Luffy simple because awakening are idiots, especially considering Luffy's fruit wasn't awakened in 800 years.
Any decent fighter can awaken Kaku's fruit.