bt 50 Vs colorado

i test drove the colorado and it seemed a little under powered and turbo lag was very noticeable or am i just being picky

I know the colorado's have torque and power reductions for the auto box, I don't know if the ford/mazda does.
The ford's definitely get off the line better when empty and I've no reason to suspect they wouldn't be quicker off the line whilst towing.
I have noticed, however that the engine in the holden/isuzu seems a lot more linear once past 1400 odd rpm, and delivers seamless power right through the rev range to the red line where the ford/mazda seems a little more 'peaky', which is fine if you keep it in the right rev range, but not always possible towing in the real world.
I don't know if the colorado has variable valve timing, but under load in second and third gear it feels like a second turbo kicks at about 3000 rpm and it really starts pulling where the others seem to run out of puff as the revs climb. This is especially noticeable in 'traffic light derbies' with other tradies in other brand utes - they come out of the gate quick, but then the colorado reels them back in. (That was about the best analogy for the power delivery I could come up with....)
I tow a builder's trailer, and 18 ft glass boat, and a trakshak (not all at once) - so not really near the tow limits of the car (boat is about 2T). The auto box will hold the torque converter for a long time at 100 kph which makes for relaxed towing without the box 'hunting' - My last auto hilux drove me insane with it's inability to hold a gear at highway speeds.
I did tow a 680 patriot for a few hundred kays from Bris to Hervey Bay(3+ tonne probably overloaded) the car did it, but there's better chassis' around for playing those games - My uncle's 3l patrol blew up (surprise) and we weren't about to leave a boat full of fishing/diving gear on the side of the highway.
Please note the above is real nit picking - either would do the job, but they are just a couple of my observations over the last 40 000 kms. If manufacturers would publish torque curves our jobs would be a lot easier, rather than seat of the pants reviews from the likes of me..... :)

thanks for that its good to have some real world feedback give me some things to go through

well i test drove both models over the last few days and the bt 50 is so much more responsive it felt like it had more power as it had no lag so i think its the way to go