Which QB starts vs the Commanders?

sleepingbunch said

I see it this way -

Haener if we're serious about potentially sneaking into the playoffs this year.
Rattler if we want to develop the QB with the most upside through in-game experience.

For this reason, I would go with Rattler (even though Haener is a little better at managing the offense currently)

Click to expand...

I don't understand this thinking. This is implying that Haener can't be good nor the future. How do you know that? In his limited snaps, he's already out shown Rattler some and had a depleted Oline and WR just like Rattler.

So why is playing Rattler considered developing while playing Haener is not?