TL:DR - Of course sensor systems in Star Wars have superluminal capabilities, and my two cents on the situation is that if they didn't, why have they invested in the Outbound Project when they aren't even at the level of detecting objects in front of them at FTL speeds? The Outbound Project is their efforts to voyage to another galaxy, by the way...
Don't worry about being good at debates. Most people don't know the difference between arguing and debating. Fewer still understand the purpose of them at all. In general, the only person who "wins" a debate is one that had their opinion changed our learns something.
I present to you this concept. Presume supraliminal sensors for a moment in Star Wars ships.
1.) Why is it always a surprise when ships pop out of hyperspace?
2.) Why have established trade routes for navigation purposes? (Defense and policing I'd understand but there seems to be little of that in Star Wars)
3.) When a ship escapes to hyperspace why do they plot all possible destinations along the trajectory if they could just watch it on sensors?
4.) What would be the point if an Interdictor cruiser if you could just hyperspace all the way around a solar system and enter from a random direction instead of coming out of a hyperlane?
In general I feel that superluminal sensors would break the system.
It's always important to remember that many sites inflate their favorite franchise to obscene levels. Here are some examples:
One article I read had Tired Fighters blowing up entire neighbourhoods with each blaster bolt. That clearly isn't the case or half the main characters would be quite dead in one strafing run. (I'm looking at you Rey and Finn)
Another article purported the idea that Star Destroyers had the power of a hundred stellar masses in their engine core. This basically means a star destroyer blowing up is likely to take out the entire solar system.
If what I see onscreen is different I call bullcrap on their articles.
Also... Sisko is the worst tactical Commander in all of science fiction. More on that later! *Lol*