As a FIFA player having experienced frustrations over the years with lag and input delay, I can only comment that the Netduma isn't the magic pill for this game. It just can't be as the issues run deeper than it can resolve.
FUT Divisions - Netduma makes a huge difference when setting it to only connect to decent ping and local players. But make sure you watch the monitor (I have it running on my PC whilst playing on the Xbox) and be patient before confirming the match as it can avoid the players who have an initial great ping but spiking (you can spot the mobile phone connections easily!)
FUT Weekend League - as its server and not P2P, I haven't found any real benefit with Netduma.
These issues are posted all over the EA Fifa forums from users around the globe. Some ISP's aren't helping with their poor routing, but the main problems reside within EA's control. Netduma can massively benefit you in Seasons, but not WL.
I have been with BT, Zen and Virgin in the UK (avoid Virgin like the plague though, their jitter is murder), plus a random ISP in South Africa when i was there for a couple of years. The issues surfaced on all, but was worse in SA due to the location in relation to EA's servers.
Not what you want to hear but I'm afraid you'll find that 'It's in the game' (as EA would brand it!)
