Indeed, +3 attack is a _lot_ like ~30 hp, +1 to two ability scores, +3 attack, +3 all defenses, all skills, a new encounter, a new daily, and a new utility.
A 30% increase in DPR means the fight ends that much faster and so you get hit 30% less. Whats the point of hp or defenses when you can simply end the fight before they even matter?
Skills? Do people actually use those? 30 power cards in front of me to choose from, not one of them is a skill. 5E will get rid of them.