Not sure I get what you are saying...your original point was that the split back wont work in the NFL. I know what the wildcat is.
I was asking you why you think the split won't work. IIRC some team are still using it...mostly west coast Os.
My point was not that split backs won't work in the NFL. My point was that RB/RB are rarely used in modern NFL. Split backs are used in west coast offenses(although not nearly as common now) with a RB/FB combo not a RB/RB combo. Lets not get confused here. NFL offenses are still in a 1 back system now, they just use 2 backs to get the job done and rotate them. The 1 back system is due to many reasons. I think the main reason is the offense simply taking advantage of matchups. The single back formation brings tight ends and WRs to the line and creates matchup problems with LBs in passing situations. The matchups with TEs and WRs on LBs forces safeties to come forward to stop the run and allows a weakness in deep passes. Hence, the popularity of the single back formations. Also, zone blocking schemes and advanced defenses have contributed to this shift. Basically you just got a lesson in the fundamentals of the Panthers offense, the #1 scoring team in the league the last 9 games. I will take that any day.