I'm not sure if it's that easy to get temperature charts for bulbs. It'll be less likely for common bulbs that are meant to be producing light, and heat is a by product.
Short answer is More Watts = More Heat.
Now for some physics...
1 Watt = 1 Joule/Second.
So a 100W bulb is converting 100 Joules of energy every second.
Lets say it has and efficiency of 5% so 95Joules are coming out as heat.
Now 95 joules is heating up 95 grams of air by one degree celcius every second.
And that's about it for me lol.
It all depends on how far away you're measuring from the bulb, and how hot the lamp actually gets when in balance with external cooling.
I think the best thing to do is try and get feedback from different customers and see how hot things get some set distance from different bulbs.
Most reptiles will find their own sweet spots to back in, so as long as it's producing enough heat, it doesn't really matter what bulb you get.