If my math isn't wrong the leverage isn't too bad? With AMP for example you need $600 margin for 1 futures contract that represents EUR/USD, 1 futures contracts means $12.5 per pip, which equals to 1.25 forex lots. That means the leverage is just over 200:1.
Yes, per tick, one tick these days on 6E is half a pip, so that's still $12.5 per pip. A pip is .0001 movement, everything smaller than that is a tick.
In futures the minimum increment (at least for 6E) is .00005 these days, in FX i think it is as low (at least for EUR/USD) as .00001, depending on the broker. Could have been changed again, it's been a long time since i have traded regular FX.
Its best not to mention cfd fraud brokers like IG Markets here, its the reason Americans are not allowed to trade those in the States. You have to learn, not only how to make money, but also need to learn how to fight your broker. Update: not sure Im right here, just Googled a bit around, but the last sentence above you need to remember