I saw a blog post by one of the designers that profused being mystified by the question whether characters in 4E of a given level will be less or more powerful than in 3.XE. He stated that characters will be balanced relative to monsters at all CR levels and the range of numbers will stay approximately the same to maintain the D&D feel.
That is certainly one way to tackle the question, but I feel that is not the issue most of us had in mind when the question was asked. Rather, I think the question is generally meant from two other angles:
1) The power of the characters as measured by when they gain certain landmark abilities, such as the possibility of flight, or teleportation, or multiple attacks, etcetera rather than mere numerical increases in various bonuses
2) The power of the characters relative to the power of landmark monsters, such as a great wyrm red dragon, or a balor, or a pitfiend, etcetera
It is the above two factors that have a greater impact on the feel of the power-level of a game than raw numbers. So, to clarigy the question: Esing the above-mentioned measures, are 30th level characters in 4E at about the same power scale as 20th level characters in 3.XE?
That is certainly one way to tackle the question, but I feel that is not the issue most of us had in mind when the question was asked. Rather, I think the question is generally meant from two other angles:
1) The power of the characters as measured by when they gain certain landmark abilities, such as the possibility of flight, or teleportation, or multiple attacks, etcetera rather than mere numerical increases in various bonuses
2) The power of the characters relative to the power of landmark monsters, such as a great wyrm red dragon, or a balor, or a pitfiend, etcetera
It is the above two factors that have a greater impact on the feel of the power-level of a game than raw numbers. So, to clarigy the question: Esing the above-mentioned measures, are 30th level characters in 4E at about the same power scale as 20th level characters in 3.XE?