I'm confused about the power level on the Head LM Radical Oversize and the Head LM Instinct. According to the power levels shown by Tennis Warehouse, the Instinct has more power than the Radical OS (the Instinct is shown as “low-medium” and the Radical OS is shown as “low”. But, the TW racquet description for the Instinct says “The overall power level of the Instinct places it about midway between the power offered by the Liquidmetal Radical Midplus and Oversize.” In other words, the Instinct is LESS powerful than the Radical OS. This appears to contradict the power levels shown for the racquets. Can someone clear this up for me? Which racquet is more powerful? Another question on the LM Radical OS – the stiffness rating of 58 is lower than many other racquets- what’s the significance of this?