G, firstly the bike you borrowed is quite old I would suggest as its only got a 7 speed cassette.
Almost certainly its got a 53/39 or similar on it as the size of the front rings and your hybrid probably has a 42 big ring.
what Im getting at in essence is thatthe rodie you took out is geared completely differently to your hybrid.... Options?
Well firstly you could get a "compact" crankset on your new bike, You could even get a triple. Personally I find the chainlines run weird with triples, so would stick to a double. This uses a 50/34 chainwheels and will be closer to your hybrid setup on your current steed, and will give you more spinning gears using the 34 ring than a 39. Secondly you could change your cassette to a more mtb setup. You probably would find if you looked the biggest rear cog on the road bike was 25 or even 23 teeth whereas on your hybrid youve probably got a 27 tooth one.
In essence a proper roadbike will be faster and more efficient, as its stiffer in the right places and lighter. It will take a little getting used to, but it will be better. Either that or the tour guys should all be on hybrids, and the "king of the mountains" stage winners should be on Raleigh shoppers.
What it boils down to is the fact your hybrid has a small front ring and a big back one, hence spinning up hills, and the roadie didnt, but you can solve it. If you struggle on climbs get a compact, and if you still struggle throw a cassette with a 27 on there. Dont let gearing put you off getting the right tool for the job. Loads of people use compacts, its what works for you that matters