Originally posted by Beniboybling
"Your powers are weak old man." 🙂
That was in reference to lightsaber combat:
He still had some skill, his old Master did, but he was out of practice. Vader could feel it through the Force.
Obi-Wan twirled and blocked a slash, then wove a defensive pattern with his blade. The Force was still with the old Jedi; he was able to anticipate Vader's strikes and block or parry them. But after a quick exchange, Vader felt the energy shift in his favor. "Your powers are weak, old man."
-Death Star
So, it doesn't contradict the quote.
Originally posted by AzrongerThat's in a different paragraph so no, and in the ANH novelisation he says it before they even start fighting, Kenobi retorting by saying Vader only feels part of the Force so again no.
No, he felt he was out of practise. What he meant by "powers" was his dueling skill, as strange as the wording is.