This may be a premature conclusion. It's not like Con hasn't been rapping, and he's self aware. Not delusional like Assidy.
Con has not been BATTLE rapping. There's a difference between rapping and battle rapping.
Battle rap fans don't really value experience and activity. It's the mma "throw them to the wolves" mentality. Hey, let's take a guy that hasn't battled in about 5 years, and put him in against the best punchliner of all time. Yeah that's a really great idea.
I have a friend that does stand up locally. You gotta be active to do well in that shyt. It's the same thing with battle rap.
Rum has probably had more battles then CON at this point. He's better lyrically, more experienced, and more active. Hell CON was sounding outdated before he left.
Rum is the only punchline guy that has managed to keep his style fresh.
I guess you could argue AVE, but it's the same shyt to me.