Ah, well that depends on how you use your phone - I can quite easily have individual apps use more power than cell standby, it's just a matter of what apps and how long you run them for
Unfortunately not all software calculates power usage in the same way. For example, if I look at my system power menu it will tell me that cell standby was 90% of my power usage today, and a browser and a couple of news apps the rest. This is in fact nonsense - I've used 40% of the battery, and in the time the phone has been on battery I know that if I'd just left it sitting untouched with the screen off it would have used just a few percent. GSam Battery Monitor tells me that my screen has used 39%, apps 48% and the phone radio 8% - that sounds much more accurate, because 8% of 40% is 3% of the total charge, which is about what I'd expect if I left it sitting untouched for 8 hours with data connections off (e.g. overnight).
In fact I can see what my phone's power menu is doing wrong: it tells me that what it calls "cell standby" is using 59% of the power in the 1.5 hours the screen was on, and 99% of the power in the 6.5 hours the screen was off, and averaging these two numbers to give 90% overall (because (99*6.5 +59*1.5)/8 = 0.9). That is however stupid, because almost all of the power drain occurred when the screen was on, which that calculation, just weighting by time, ignores (plus I don't believe that it actually used 59% of the power when the screen was on either). What that tells me is that whoever wrote that bit of the system software is an idiot!

Now whether your phone has the same problem depends on whether the idiot in question worked for HTC or Google, and if they did work for Google whether someone in Samsung spotted this and fixed it in your phone.
I suspect your display might not have this problem, because if I look at your numbers the phone used 47% of the battery in 5 hours, of which cell standby used 22%. So 0.22*47/5 = 2% per hour from cell standby, which is a little high, but perfectly possible if you are moving around (so switching cells) or spending time in places with a weaker signal. And as you say, there is the question of what they are lumping together under that heading of "cell standby".
But I would suggest using GSam to get a better idea of what is really using the power, and working from there.