Seconded and carried - enforcing rules is an admin's privilege and not their responsibility. If someone has a ping over 200, it's admin's discretion to kick them (generally spurred by someone saying 'That guy is lagging hard,' followed by an admin watching them and then carrying out the kick/ban). If your ping is under 200 but you're doing as others suggested, lagging to the point of warping or skipping and being impossible to shoot, you're also going to get kicked.

Keep in mind, admin is a paid service on IBIS. There's not going to be consistency because everyone who pays for the rights to admin is going to use and enforce their admin differently (this DOES NOT mean they make the rules - but whether they enforce the rules or not, and which they enforce, is totally up to them). What you're asking for is a complete rewrite of the admin function's role, duties and responsibilities and simply put, that isn't likely to happen.

If you find you're being kicked/banned unjustly, however, by a specific admin, there's an entire forum subsection devoted to admin abuse. Get the evidence by downloading the demo from one of the FTP servers and pop a thread up. I guarantee it will be promptly and justly handled.