Same heat bro..... same heat..... 600 watts. Only difference is the HPS is going produce more weight. Don't waste your time or money on fluoros.
Heat is radiation. Light is radiation.
Heat is in the IR spectrum, HPS produce a lot of it. As do other HIDs.
HPS/MH do not produce anywhere near the quality of light(for plants) as CFLs. They are available in greater intensities, yes. They also waste a lot of power on unused and BAD(IR) light and heat from the 'fire'.
Lumens measure light intensity for human eyes. Examine the spectrum for human visual and HPS together. See where the peaks meet in green ~570nm? That's why HPS rates so high in lumens. Humans see green-yellow as white(intensity)! So lumens don't mean that much when we REALLY want the OPPOSING sides! The intensity is wasted. Plants would see red and blue as most intense.
I assume you've never heard of nLites,,, or PURple CFLs.
They're not the same heat outputs at the same wattages. Seeing as they're at least twice as efficient at converting electrical energy to PUR(plant usable radiation).
You'd need about double the wattage to produce similar ambient heat(CFL vs HID). I still doubt you'd get as rich IR as you would with HID. IR is like a sunny day. Even if it's windy, you can still get sun burned.
CFLs generate *UV light*, then phosphors are added to tint it. Very, very little IR is generated. Slim chance of burn.
HID generates *IR light*(HPS has a 1100C arc) along with other parts of the spectrum depending on the metals, pressure, and gases used.
"so what would yield more 3 plants with 1 200w envirolite each or 3 plants sharing a 600w hps"
The HPS, if grown for the same duration, and total dry weight. The CFL for 'grams/kwh'.
Never touch a running HPS bulb(or other HID), unless you like the smell of instantly burnt flesh, and the pain that comes with it. You may leave a smoldering finger print.