As a gross generalization, yes.

The sealed might look like this:

................._ _ _ _ _ _ _ _
............_
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.._

And the ported like this:

.........._ _ _ _ _ _ _ _ _ _ _ _
........._
........_
......._
......_

But more likely, most ported boxes end up like this:

.............._
.........._......_ _ _ _ _ _ _ _
........._
........_
......._
.._

But the transient response is poorer with ported. There are a lot of ported speaker designs that sound good. But it's hard to execute them in a car without a lot of experience and savvy.WIth the small sealed performance of today's woofers, I've pretty muich abandoned porting boxes. You can get 0.5 cf 10" subs now... when I started, it was more like 1.5 cf in a sealed box. Then porting helped a LOT.