I think he's much better than Vaughan
In fact, I believe Agard and Baxter are going to be better than Vaughan. As of now James seems to be a flash in the pan until he proves otherwise at Derby, and of course I hope he does.
On Jo, I like the way he plays, I genuinely do, furthermore I like the differences he offers in terms of attributes compared to our other hitmen. My assesment of him is this so far:
Football to me, is a game that is diven heavily by emotion. You have your strikers such as a Rooney, Ibrahimovic, Drogba, etc. who all happen to be power players. Tons of fight and determination that translates into pissy attitudes and lashing out when an oppurtunity is missed or a chance is halted someone or something. Then when they score they yell, scream and do whatever like a giant figuaritve exhalation. Jo is not like those strikers, in fact none of ours are...the only one that would be close is Saha, based on celebrations alone. But Jo is only driven by happiness and will because this sport satisfies a void within him; when he scores pretty much all he does is smile, when he doesn't his reaction speaks volumes. The dude just wants to be happy, no he's not Tevez, but he seems to have a love and loyalty for Everton like no other. His work rate has improved though, with instilled confidence he's taken it upon himself to drop back and make runs from deeper. Going back to the Wigan game, when Jo came on he made a difference and that run down the right into the box involved a fantastic step over and a clear foul as he was in after that. It was a ridiculous match in general but he deserved that for his effort and we converted. So without those points we'd still be hanging out with Pompey and Hull at the bottom. I gurantee you Vaughan wouldn't have come on and changed the game that drastically.
And what about the Athens and Hull matches? He was great, the furthestmost cog for us on the pitch. At Goodison he linked up with everyone (Bily, Peanuts) and held up play, and deserved his well taken goal. He caused Hull all sorts of problems and most importantly played great with Yakubu.
Of course this is all just my opinion and like many others have said is most likely futile considering we don't play 2 up front. One thing I'm sure of is that with a forward like Jo his developement will only move as fast as the time he gets on the pitch. As long as our formation stays as stoic as it's been then he'll have an even harder time coming into his own.
The Samba Man needs Stability