CL and APR are not necessarily the most important differentiating factors among cards. in fact, I would say if CL and APR are important factors to someone, they are probably carrying a balance and thus probably losing at the credit game, paying interest and fees to the bank (a lot of us have been there and recoevered). If you PIF every month, a CL of around $5k should be enough for the vast majority of the people out there and APR is meaningless.
BofA does offer a few products that are best in class, depending on your relationship with them. They are also known for being generous with CLIs and myFICo users have reported some hefty limits after in short order. Big CLs are nice but they don't really offer any value (unless you carry a balance of course). Nice rewards and sign-on bonuses are really what differentiates cards worth having.
In my experience at least, BOA is the most generous bank with credit lines and a lot of data points on this board show that I'm not the only one. I have more going in balance transfers with them much of the time than a lot of people here have for annual income, so I very much value the relationship I have with them. With the right profile and income, the sky seems to be the limit for them. The 3 in my signature are over $88k and I fully expect that to be 2 cards around $120k or so next year after I request a few CLIs and combine two of the cards.
Their Alaska and Amtrak cards are top tier travel cards for the lower annual fee crowd, and if you have enough of a relationship with them to add multipliers onto their non-cobranded cards, they can be great earners. I personally just use them for balance transfers, and for that they are reliable and consistent.
