That first line scares me. If there is a restriction that states you can't use specific pokemon you shouldn't ignore it. The Smogon tiers go from PU to Ubers. Pokemon from lower tiers can be used in the higher tiers, but pokemon from higher tiers can'tbe used in the lower tiers. Example being that you cannot use RU pokemon in the PU tier.
Oh, what I meant, was that, when it comes to restrictions on Pokemon in a tier, ignore the Pokemon at the bottom of the page (the "Stragegies" ones). The restrictions don't apply to those Pokemon because they technically aren't in the tier. I didn't mean to ignore the restrictions.