User blog comment:Fistful of Force/How early can you do dragon analysis 2/@comment-3450702-20120922130352

Also note that some mid champions are very good for taking dragon, some have only burst (like lb) and after that are fairly useless. With this in mind, you can estimate the speed of taking dragon, and thus the damage you'll take and the time they have to contest it.

Another good blog post, +1