Possibly. I've never had a jab in the butt so I couldn't say, and there's no way in hell I'll go near any hormonal contraceptive after my hellish experience with the pill again, so don't think I'll be comparing any time soon.
I do donate blood every 3 months though and have never had a problem with needles at all. In fact, when I had some wisdom teeth removed a year or so ago the dentist kept warning me that the injection could hurt quite a bit... I honestly didn't even feel it though, painless.
They just don't worry me. Shame I don't vaccinate, perhaps I should swap my tolerance for someone who does vaccinate and has a morbid fear of needles?!
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We are a fever, we are a fever, we ain't born typical...