Left is the iPhone SE, right?
Left:Lumia; Right: iPhone
Is the left the iPhone SE and the right the Lumia Phone ?
And the winner is.....Le Big Mac! (and Saintsfan1970). The 1.2 MP face-facing camera even has better detail than the 5 MP Lumia front-facing camera, although the Lumia has better tones.
There is a huge misconception that more MPs automatically means better pictures. Low-light noise is about sensor size more than anything else....a 1" 1.2 MP sensor will be a ton better in low light than 1/3" 14 MP smartphone camera sensor. Processing also plays a part, which is why lower-MP iPhones have won many head-to head photo reviews with higher-MP Samsungs and others in the past.
You also have to consider what your selfies are for......are your selfies to be displayed on your cell phone, tablet, or computer monitor, or your 65" 4k TV? Are you printing your selfies at poster size or blowing them up to crop them, then printing them out ?? If your selfies never leave Facebook/Instagram/etc, and you are always displaying them on your cell/tablet/laptop, 5 MP is probably overkill. Now, the selfie sensor could be bigger, but then you give up screen real estate.
Remember that for YEARS Apple refused to play the spec game, and was even secretive about specs at times, preferring to focus consumers on the end product. But I think that they have succumbed to the same marketing tactics that first PC and now smart phone manufacturers know, that they can get people to buy their products with a simple spec bumps without many consumers thinking about why they need to have the higher specs. I firmly believe that we are reaching the point of diminishing returns.....why do you need a 4k screen in a 5" cell phone display? Yet some are clamoring for them.
As always, JMHO.