Tiers is much simpler than you are trying to make it. You belong in a tier where you can beat the tier above you and lose to the tier below you. You won't be beating people two tiers above or losing to people two tiers below you. Exceptions should be made when considering illness, injury, or a lucky deck (which can actually happen to anyone - See Hidlay/Lautt).
Reasoning for Labriola being Tier 3:
- He is not sniffing Starocci - Tier 1 (two tier jump, ergo - not happening)
- He can beat Lewis, who is a tier above him. *
- He can beat to Foca, who is the same tier as him. *
- He can beat Plott, O'Malley, Smith, and Romero, who are the tier below him *
* He can also lose to all of these guys, and I would not be surprised
- I do not see him losing to Lautt, Mocco, Ruth, and Brands - or others in their tier (my tier list was unfinished, just roughly put together)
Reasoning for Lewis being Tier 2:
- He absolutely can beat Starocci, although I would favor Starocci
- He can beat Labriola and Foca *
* He can also lose to Labriola and Foca
- He is not losing to Plott, O'Malley, Smith, and Romero - or any others in this tier or below (my tier list was unfinished, just roughly put together)
Reasoning for Foca being in Tier 3:
- See every reasoning for Labriola being in Tier 3 as well, just replace where it says 'Foca' with 'Labriola' and you will have it
Bear in mind that these are opinion driven and you are welcome to have a differing opinion that mine. Better yet, I would welcome your own tier list to be able to compare.