Jurassic Park 3 Spinosaurus introduction

It seems that a lot of people didn't like Spino's introduction into the trilogy. I am one of them, and I decided to start this discussion to see what other people think. I think that Jurassic Park 3 could have been better if they had simply changed how Spino was introduced. We know Spino was big from when it attacked the guy on the runway, and when it attacked the plane. We didn't have to see Spino kill off T-Rex to see how big it was. That was overkill in my opinion. Maybe if Spino had scared Rex away from it's kill or something similar, or just had a shoving match to see how much bigger it was before Rex admits defeat. Maybe they could have had them meet again at the end and had a fight then (not going to say who would have/should have won, leaving that up to personal beliefs. I think it would have been awesome if Rex came back at the end and beat Spino in as the navy is leaving).