Just because Fury defeated Jaspers and its your opinion that Jaspers can defeat the Force, doesnt mean that Fury could therefore defeat the Phoenix Force. Thats elementary level logic. Classic Emma Frost could take out Colossus, Colossus could take out a Sentinel, does that therefore mean that Classic Emma Frost could take out a Sentinel? 😕
Jaspers under-estimated the Fury and was toying with him. Despite all his power he was limited by his human imagination and human experience. Instead of attacking Fury with his reality warping abilities thereby ensuring a victory, Jaspers merely used his abilities on himself to shapeshift into various animalistic forms and crudely fought the Fury hand to hand. Fury of course could withstand this sort of physical assault and it gave it a chance to formulate a strategy to take Jaspers out, which he did by teleporting Jaspers outside of reality where he was powerless.
Given that we know the scope of Jaspers abilities and we have witnessed this power, we know he never fought to his full potential against the Fury, therefore Fury defeating Jaspers, does NOT mean that Fury could therefore defeat any and everything YOU think Jaspers could defeat.
The Phoenix Force could easily disperse Fury at a sub atomic level or drain him of energy and the Fury could never kill the Phoenix Force. Its immortal, indestructible, mutable energy by canon. Shatter it, disperse it, absorb it for your own uses and re-channel it and it will still be alive and kicking.
Theres nothing Fury could do to it. Hes not fighting an avatar who he could temporarily dispose of by destroying the physicality, hes fighting the life force of reality.
The Force isnt plagued by the same problems its avatar Jean is, i.e disorientation upon hatching from a Phoenix Egg, or disorientation from being temporaily disconnected from the Forces Consciousness because this IS the Force unrestricted by physicality. The Force could amputate any part of Eternitys timeline, his future as we saw or if it chose his past, both resulting in his non existence and the Force would do it in alot less time than a physical avatar. So posting scans of Jean getting her head together before actually amputating the future reality wont cut it here.
Just to summarize, Fury didnt fight and defeat a Jaspers fighting at full potential, therefore even if its your opinion that Jaspers can take out any of the listed opponents, you cannot therefore claim Fury could defeat any and anyone you believe Jaspers can.
The Force is the life force of reality, just being sentient within reality drains reality's collective life energy reserve. Its avatars have manipulated Eternity in the palm of their hands at an atomic level, first after the telekinetic amputation, (after which Jean held the future state of Eternity, a divergent possible future reality 15104 in her hand where it was later disposed of) and secondly when Jean materialised the rest of the timeline in her palm telekinetically to heal the wound she had inflicted on it by altering the past (i.e Cyclops reaction to Emma) thereby growing a new future to replace the one she had just cut away.
The Force would be easily capable of that and so much more.
Jaspers couldnt destroy the Force. The Force could teleport him out reality into the void, or it could telekinetically rip reality away from around him(certainly feasible if one of its avatars can wield telekinetic control of a reality down to its atoms) either option resulting in a powerless Jaspers.
Or the Force could be cheap and take Jaspers out of the equation before he could blink an eye. Jaspers needs to apply his power to himself to make his physicality anything more than human, he needs to either do that directly or he needs to create a reality warp an area of reality where he determines the laws. Either way with his very human reactons the Force could snipe him before he even registers whats hhappening to him.
Phoenix is greater than Jaspers(dont go off on a tangent about his supposed omniversal potential which is irrelevant when it was never ever realised on panel)