No, Payscale, it isn't. In fact, 5 years is bloody good going if;
1) This is your first jet job and you haven't already spent the last 15 years gaining valuable experience elsewhere.
2) Everyone else in the same Company takes 5 years to command and it's in strict seniority order. Regardless of aircraft type or previous command time.
3) DEC's don't even enter the equation. In fact, they shouldn't even enter the Company!
4) They tell the absolute truth during roadshows and at interview.
Knowing how it actually works here AFTER you arrive is the easy bit. The hard bit is knowing BEFORE you arrive.