Lets start with display i phone 13 comes with 6.1 Inch same in Iphone 14
Notch is almost same as the iPhone 13
Processor is also same in both the iphone is A15 Bionic Chip
Battery was improved in Iphone 14 ( 3276 mAh ) which is neglagable because iphone 13 gives us 3240 Mah
Camera is same as the previous Iphone 13 The main deffierence I see in iphone 14 is the night photo this is beacuse of Camera Focal Length which every Body ignores
So We can say Camera is Slightly improve for Night Light
The Highlighting feature or you can say the only feature is the Crash Detection and Satellite Connection in Iphone 14
if you use iphone 13 then you dont have any need to buy Iphone 14 if you are a new user then you can go with iphone 14
If you pocket is tight and you are a new user you can buy iphone 13 blindly its a good choice and worth for money product