I just wondered if anyone could help me out, some of this Xbox One stuff is confusing me slightly.
Is the Xbox One capable of doing native 1080p games from a technical standpoint? If so, has Infinity Ward just been lazy with doing the Xbox One version of their new game?
Yes, it is most probably capable from a technical standpoint. But I wouldn't argue that infinity ward is lazy. If they were truly lazy, then they wouldn't have reached 1080p on the PS4. The issue has to do with not enough power to easily get to 1080p. The tools not being mature enough aggravates the problem.
If it isn't, can Microsoft make up for it via this ESRAM or their cloud service?
Doubt it. There is nothing Microsoft can do here, except improve tools. The cloud can hardly be used to improve any realtime processing capabilities. Improving resolution using the cloud would be near impossible for a long time
Am i correct in thinking that the PS4 can do it fairly easily because of the GDDR5 over the DDR3 on Xbox One?
Amongst many other things, yes. Easier to develop, more processing power, better suited RAM for graphics etc
Thanks if you can help. I'm not really too good with the technical side.