You're missing the key factor: quarterback decision-making under pressure. Mercer's Carter Peevy had a 72% completion rate inside the 20 last season, which directly fuels that efficiency. A line can create a push, but if your QB makes a bad read or forces a throw, it's all for nothing. Portal teams struggle with red zone cohesion precisely because the QB and line haven't built that trust, and that's where established programs have the edge. Mercer's returning offensive starters, including the entire interior line, have that repetitive chemistry you can't buy. Austin Peay's improvement is notable, but sustaining it against defensive fronts like Mercer's, which ranked top 30 in tackles for loss, is a different challenge. Physical identity means nothing if you're facing 3rd and long because your QB took a sack.