Is the 1600x900 screen a problem?

It is the weakest part of the package. Text and video look noticeably less sharp than on a 1080p 17-inch laptop, so it suits casual use more than detailed photo or document work.

Can I upgrade the RAM and storage?

The 17-cn series has a service panel for the memory and drive, and the RAM is a SO-DIMM slot rather than soldered. Check the exact configuration before buying, since some models ship with both slots filled.

Is it good for gaming?

No. The integrated Intel graphics handle video and light indie titles, not modern 3D games. A laptop with a dedicated GPU is the right choice for that.

How does it compare with a 15-inch laptop?

You get a bigger screen, a number pad and more room for cooling, at the cost of weight and portability. If you carry the laptop daily, a 15-inch model is easier to live with.

The laptop, its power adapter and the usual paperwork. It does not include a mouse, a sleeve or a stylus.

Is it worth it over a 1080p 17-inch rival?

Only if the larger chassis and keyboard matter more than screen sharpness. Most shoppers at this size are better served by a 17-inch model with a full HD panel.