Has 3DS peaked in its first year in the US?

[Seece]

So with the news 3DS is at 11.5m LTD in the US end of 2013, we know it sold around 1m units in Dec (down YOY), giving it full year sales of 3.8m, just above last years total of 3.65m

2011: 4.08m
2012: 3.65m
2013: 3.80m

Pokemon and 2DS were considered big hardware movers yet it couldn't match 2011 sales, what can be done in 2014 to surpass 4m again?(realistically?)

I should add this is a good but not great yearly average for a system in the US, PS3 which came a distant 3rd in the US last gen averaged 3.5 - 4.5m yearly.