Wrong. Character definition and progression defines an RPG... and you can't have either without stats/numbers.
Wrong.Here, have some delicious copy paste with a few edits from a post I made a few weeks back.
RPG's have little to do with stats. Let's look at what an RPG is.
An RPG as letters that make up the acronym suggest is a game where you role play. Now what is role playing ? Put simply role playing is when you take upon yourself the role of a character and you act accordingly outside of a script. So not to be confused with acting where you do the same thing, that is take upon yourself the role of a character, the main difference is that when you act you are doing it by a script but when you role play you are doing it freestyle you could say.
So what would make a game a "role playing game" ? If all it takes is to take upon the role of a character and act according to it then one could say any game is a role playing game as most games put you in some one role and then you have freedom to express said role, however that is not quite correct. A role playing game needs to give you freedom over 'what' role you take upon yourself, so any game that puts you into a specific main character is not an RPG, it also has to give you the freedom to make original characters, so you could not call Tekken an RPG just because you can choose between a few previously made characters, also a role playing game needs to give you ways to differentiate one character from another, so it's not enough to say "I can make any kind of character in WoW, so it must be an RPG", you have to be able to follow your characters personal morals throughout the game, pick sides and betray sides if desired.
Then there is the matter of what makes a "good RPG", a "good RPG" is what we call a game that allows you more freedom to express your character than other games. This is why D&D for example and some other alike tabletop games are still considered the top of the ladder for RPG′s because in said games you have a human DM that can grant you total freedom over your actions where as any computer game that is designed cannot be designed with such freedom because the required data for having near infinite options would be, well, near infinite, not to mention it would take too much time to design such a game that it would simply not be feasible nor worth the money.
This doesn't mean all computer RPG′s are bad, they just get a section of their own, and the way to see if an RPG is a good RPG or not is simply to consider how much freedom of expression you have in the game. If two RPG's have two similar quests for example and one of them allows you to stay loyal to the quest giver or to betray him for whoever is working against the quest giver, and the other game adds a third option to betray them both for your own interests, then that is an example (granted not a very good one) of one game having more freedom of character personality expression than the other, thus making the later RPG a better RPG than the first one.
Now where do stats and the combat system come into all of this ? Well quite frankly they have very little to do with it all. You can have tools that aid you in expressing your character, like if you were role playing in real life you could have pads to make the character you are playing look a little more buff than you are IRL, but those pads don't make up the role, it's the character decisions and actions that make up the role. Stats and how the combat system works are only there to compliment the role play by helping you mark your character as "smart" or "strong" or "accurate", but in no way does having stats completely define if it is a good RPG or not and most certainly it does not define if it is an RPG overall.
While I don't agree with the general attitude of the article (it seems to suggest Skyrim will just be a pure fast paced action game without all of the 'boring stuff') I can't say he's saying Skyrim won't be an RPG, and mount and blade is not an RPG, far from it.