The Thermalright Peerless Assassin 120 is the objective winner of this comparison, securing two out of three spec victories. Its most significant advantage is its MSRP, which is 82% better than that of the alternative. While the DeepCool Mystique 360 offers a superior TDP rating that is 45% better, the overall spec count favors the Thermalright Peerless Assassin 120 as the more efficient choice for most standard system configurations.

Users prioritizing cost-effectiveness should select the Thermalright Peerless Assassin 120 due to its substantial MSRP advantage. Conversely, those who require higher thermal management capabilities should opt for the DeepCool Mystique 360, as it provides a 45% improvement in TDP rating. Choosing between these two coolers depends entirely on whether your primary requirement is budget optimization or maximizing the thermal dissipation capacity of your cooling solution.