Same rewards? Go and get a full suit of raid gear and a full suit of LFR gear and watch recount to see the difference between LFR rewards and Normal/Heroic rewards. If you can't tell the difference between LFR rewards and Raid rewards then you can't be helped.
Regular ToES raid gear is 496, ToT LFR gear is 502. ToT LFR gear is only 6 ilevels higher than ToES regular gear. You have nothing to fear with Casuals stealing your 1337 gear.