sexy women with big titties and asses.

but that's not limited to 1st round left tackles.

To answer OPs question. Being drafted 1st overall.

Personally, I would never draft an Iowa LT high. To me, they're basically all guards playing tackle. They're all power, and run blocking, not so great at footwork and technique.

Joeckel is nothing like Jason Smith. That's one hell of a reach

Money.

They are human just like any other player. Some don't have the work ethic, get lazy when they get the money, etc. sometimes scouts are just wrong. What made Akili Smith a bust at QB? Or mike Williams at WR? It's not an exact science

I believe it comes down to three things.

Feet and desire.

The QB has the most affect on how well a LT does, just look at Johnny Manziel and how he made a 2nd-3rd round pick a potential #1 overall.

Pretty sure there's some intended hyperbole there.

Manziel did bail Joekell out a couple of times, but he (Manziel) had a tendency to run well before he had to.

Joekell is a solid technician that woud be a first rounder in any draft, whose value is inflated in this draft because of the lack of elite talent at the top.

He's going to be a good LT for a long time.

But the emphasis here is on the word "good".