i can never remember the names. i think you mean the elongated version with long snout and yellow tail, yellow tint to body vis a vis red tail. if so, yes it grows much faster and bigger.
I have never owned altus. But I have owned most of the others and it is said that the altus is very comparable to the falcatus in growth, tempermeant, etc.
That would mean a slower growth rate then the yellow tail version that everyone thinks about or the Acestrorhynchus microlepis or falcirostris. All of my past red tail or falcatus grew about 3-4" a year. While my yellows grew 8" in the last 7 months.
Altus and falcatus are said to reach 8-10" at full grown. While the falcirostris can reach 16-18" in the wild.
Hope that helps. And here is a good older read about cuda's that you may enjoy