Didi was the business better than Masherano in my view. He was cleverer and scored more.
Let me add to that. He can pass and cool under pressure.
If I had to choose I would pick Hamann slightly ahead of Mascherano because for me Mascherano is still the biggest waste of money we have ever paid for what we got back.
Going back to Hamann and the Champions league final in Istanbul, I dont really think it was so much the introduction of him coming on which was so important it was more the fact we needed to split the disgraceful Gerrard/Alonso partnership up who were being ripped apart due to lack of discipline mainly due to the captain.
I really dont like Hamann type players in the game dont think there is a need for this type of spoiler, did'nt like Wilkins either, Batty or the great water Carrier himself Didier Deschamps, Barcelona prove you can still be successful without these type of game killing spoilers by erradicating the worst one in the game to centre half and out of the midfield alltogether.