Since Crusader is a level 60 spell, it does less every level you are above 60. The exact amount is -4% effectiveness per level.
So at level 70 (a 40% reduction), Crusader only gives +60 Strength and only heals for 45-75 health. The tooltip still states you're getting 100 Strength, but if you look upon your character sheet, the increase is only by 60. Of course, this is the same for any tooltip in the game.
Spell
Crusader
Physical
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It is possible to enchant both your Main-Hand and your Off-Hand with Crusader. They stack. Thus giving +200 Strength if both procs at the same time.
If you are interested in the proc rate of crusader then read this.
http://rogerkarlsson.com/blogs/wow/crusader/
In short, the proc rate for lifestealing is based on your weapon speed, and the approximate proc rate for any given weapon can be found via this formula.
proc rate (%) = weapon speed * 1.82
Tooltip
Permanently enchant a melee weapon to often heal and increase Strength for 15 sec when attacking in melee. Has a reduced effect for players above level $ctrmax2067. Cannot be applied to items higher than level $ecix.
Spell facts
Datamined from the current retail build. Numbers that scale with level or stats are shown at their base value.
Reagents
Items that grant this spell
More Enchanting spells
Related
Community notes from Wowhead · 200 comments
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