I would say, the reason different players use different equipment always comes down to personal taste.
And it certainly isn't like 245 is better than 145 is better than 45. This is no such thing as a hierarchy of equipment like that. One blade will be good for one player and a different blade will be good for a different player.
You could also ask why so many pros seem to use Viscaria when there are newer ALC blades, there are ZLC blades, there are Super ZLC blades. Why do so many pros simply choose the oldest, simplest ALC blade (Viscaria)? Well, probably one reason is because they like it. Another might be because it is a good blade for them. And, yet another reason might be that a lot of pros do choose control over power because they have good technique and do not really need the blade to supply too much of their power.
But, no matter how you choose to explain the issue, it really does simply come down to PERSONAL PREFERENCE.