In my OP I aknowledged the fact that some believe you build a contender with a PG and used D-Rose by name, among others. Whether you think my post was "accurate" or not doesn't change the fact that I strongly believe the way to build a team into a legit, long-term contender is by trying to build yourself the best frontcourt that you possibly can. Look at Betzza's post of the last 10 PG's to win a title and I think it gives some very solid evidence to back up my opinion. And of all the teams you named that were contending for the title this year, the team with the best frontcourt of the group ended up winning it all. You called me wrong, yet in a round about way actually helped me make my point. Thank you.
Uh . . . you're welcome. I don't think I helped you prove your point. Your OP was an affirmative assertion, I presented counter-examples of a number more than sufficient to demonstrate your assertion to be false. More, saying that Dallas had the best front court, therefore you're right is most definitely not right. Dallas did not build that team beginning with the front-line. Does it have a good front line? I think so. Did it build the team BEGINNING with the front line? No it did not.
Now, if your argument is something like this: I believe that having a good front line significantly enhances your chance of competing for the NBA title, then I think it's a potentially valid argument, and we'd probably be in agreement. But that's not what your OP asserted.
Now for the person who pointed out that Nowitski is a power forward, yes of course, that's the position he plays. But, in my opinion, his game in many ways more closely resembles that of a small forward. A relatively high percentage of his points come from the perimeter or outside the paint. He does rebound reasonably well, and he does have an good inside game, but he's not a banger and most definitely not a prototypical power forward. His game is much more similar to, say, Carmelo Anthony than a Carlos Boozer or a La Marcus Aldridge.
But as I see Dallas, it built around the core of Nowitski, Terry, and Kidd adding pieces around them. It didn't establish a strong front line and then build around that, which is what the OP certainly seems to be suggesting is required to contend for the championship. The fact that this is what some teams have successfully done does not prove the point, however, that it is therefore required.