Apples to oranges my guy.
Better analogy:
Try a high wire 1,000 ft off the ground to 10 ft off the ground. One is a matter of death and the other you can lick your wounds and walk away from
In your analogy the 29 yarder he missed was "low pressure " because it was early in the Texans game when in fact had he made it and the 52 yarder he also missed, the Saints would have been playing for a FG to Win late in the game instead of having to score a touchdown. You counted that kick in the 4 he's missed.
Why? Because All Kicks Count. During the course of a career they are judged by their full body of work. When they are trying out as a replacement do you think that the G.M. discounts their history of misses or makes because they were "low pressure "?