Yes the real prupose of the slots is not to dissipate heat it's to vent the gasses from between the pad and rotor helping to keep contact between the two surfaces. If you have ever driven/braked hard on solid surface rotors you know what it feels like when those gasses get trapped between the 2 surfaces (for the life of me I can't remember the term we use to describe this happening). Basically you will feel the brakes become uneffective very quickly. The Slots expell the gasses from between the surfaces keeping your pads in contact with the rotor surface. This is why slotted rotors are used on GT Race cars. If you have ever watched a night race you can and will see the rotors glowing cherry red from heat but they are still working properly due to the gas being expelled from between the surfaces. Ok I'm Done going on and on.

-Kevin

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95 Eclipse RS - Rolled
96 Eclipse GS - Traded
95 Eclipse GSX- Sold
01 Blazer LS 4.3/5spd dropped and clean DD
88 Camaro RS 361 CID with a 6spd and a bar 10 second street car on motor.