Isn't the scaling process helping , try to comapre ratio of aircraft lenght to iwb in comparison to what ratio is in image , you will get a fair enough comparison
Yes. To a degree... We still don't know the exact dimensions of the new versions. It's ever-changing.
I think they increased the volume of internal weapons bay, by bulging the belly below & to the sides. That's my conclusion from shifting the front view. Could be incorrect.
Can you tell me the differences between IRST, DAS and EOTS?
You should just Google & read the basics. Too much offtopic rambling required for that.
@Lonewolf explained well. I'll just add a bit.
IRST is Infrared imaging system that identifies & tracks the IR signature of jets & incoming. Limited to 60km.
EOTS is a electro-optical version of it that combines TV & IR for better imaging, target identification & tracking, weapons guidance. (You won't need seperate targetting pod, meant for stealthy strike).
DAS is the latest (& somewhat unproven) all direction integrated infrared tracking tech, meant for better situational awareness. Not for attack or wrapping guidance, but more of a defensive role.... If future this will workaas MAWS & direct the DIRCM to counter IIR-guided AAM.