That's tough to say, I've wondered about it a bit but it's a tough comparison for me to make because Tanaka's game was not ready for release and he never got a chance to finish it (I won't get into it, but there were so many obvious faults at launch that the released product could hardly even be considered ready for beta, and I'm sure they knew this). At the same time, Yoshida doesn't even get to create his own game, he has to do the best he can with an existing, unfinished game made by Tanaka.
For example, let's look at the combat. The original idea was for a combat system where positioning mattered and every command was input by the player. Now on paper, this sounds amazing. In fact, there's a few MMOs releasing around now or in the near future (I won't name any names, I don't want this to become a comparison thread) that also place emphasis on positioning and use commands for even basic attacks, and people are loving it. I'd imagine FFXIV was originally intending to go for a similar approach and would have been met with high praise if they pulled it off, but it didn't turn out nearly as well as it could have. Combat lag was horrible at launch, making an interactive combat system nearly impossible, and while I cannot say for certain, I'd imagine the combat was not fine tuned to a point that they were happy with it (a guess based on how it turned out, in addition to the number of other aspects of the game that were obviously very far behind). With Yoshida in charge, auto attack was put in place, which I personally feel was more of a step back than a step forward, but I'm not sure I can hold this one against Yoshida. The current system was not working, server lag was still pretty bad, and a lot of players were asking for auto attack (which I feel is mainly due to how bad the new combat system turned out, rather than auto attack being the optimal solution). So it is possible that the developers under Yoshida were only making the best of a bad situation, rather than doing the best that they possibly could.
I could give plenty more examples, but the point would become redundant. Neither of these guys were put in a great situation and for every fault the game has under their watch, I have to wonder, do they actually want things this way or are they just making the best of the situation they've been given?
Edit: By the way, I think this is worth bringing up here. Does anyone remember the original development team's plan for companies? For those who don't, I did a little digging and found what I think was the first mention of it.
Establishment of In-Game Communities
The first version update of 2011 will introduce what are known as "companies," a special type of linkshell with more group-oriented progression and goals.
Once estbalished, companies will be able to work towards acquiring their own communal assets, such as buildings that can serve as headquarters, or ships that can be used to access multiplayer content. The system will provide concrete benefits to players who align themselves with a company, as well as motivate already established companies to seek out new recruits. In essence, the focus will be on providing new, innovative content for all players to enjoy. The FINAL FANTASY XIV Lodestone will also offer a number of online services covering both companies and linkshells.
This was at one time the feature I most looked forward to, as the thought of working with my friends to buy not just shared housing but ships
as well, sounded very enjoyable to me. I believe the team was shifted within the next month and obviously this idea was scrapped or at the very least, put on hold for quite some time. It makes me wonder what the original team's game would have looked like with their vision fulfilled. Imagine if they had worked on it longer, on responsive servers with a fully fleshed out interactive combat system, player run housing and ships, maybe updated zone design (given more time/resources, I'd think they'd have probably wanted to do this, as I really doubt the massive sea of copy/paste was their ideal vision), and the general polish you'd expect from a Final Fantasy main series title. Edited, Apr 27th 2012 7:21am by Susanoh