Nope. It's not about competing it's more about having the right amount of air space and port area for the sub and power that's being used plus tuned to The type of music being listened too and a tuning that'll work good for The sub and air space of The enclosure.
The majority of pre fab boxes don't have near enough port area for the power op plans to use. Or enough bracing for that matter.
Won't get into a tuning debate but will say in my experience the enclosure and type of music,goals,the sub it's self and vehicle play a larger roll then someone putting a blanket statement that 30 34 38 etc Hz sounds the best.
Personally I wouldn't waste
I'm just going to build the AB recommended box. It is 32"W x 17"H x 18"d. The port will be 3" x 14" x 15". All one inch MDF construction. The tuning will be around 40hz.