Yep Soda can't get the rhythm he likes against JMDP. Del Potro defends a lot better than the other big hitters and with interest, so they have to go for broke all the time.
Yup, it's worse for Soderling than for Tsonga and Berdych because the latter two have more variety, while Soderling's only option is to get into a baseline hitting contest where he will inevitably be slaughtered.
Lenders please explain Tipsarevic-Nishikori (5-0, 10-1 in sets)
They played all their five matches in a very short period of time when Kei was in a slump/returning from injury, so I'd like to see more before calling it a bad matchup. It's a bit like Cilic vs Tipsy imo, things will become more even once Tipsy became a top player/Kei got healthy, a top player.