"Pay to win" is a gaming model where players can gain significant competitive advantages over others by spending real-world money, rather than relying solely on skill or time invested. This frequently involves purchasing exclusive gear, powerful items, or stat-boosting upgrades that make it difficult for non-paying players to compete.
If you follow the direct definition then yes, this would be pay to win.
Correct me if I am wrong but from what I understand you can not create some of these builds with the offered stats and boosts in the game (they are only given to the builds that cost "real world money")