Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-F KEY PERFORMANCE FACTORS December 31, 2000 Expected B Maturity 9/15/05 Blended Coupon 6.6763% Excess Protection Level 3 Month Average 4.52% December, 2000 0.56% November, 2000 6.60% October, 2000 6.40% Cash Yield19.79% Investor Charge Offs10.15% Base Rate 9.09% Over 30 Day Delinquency 4.72% Seller's Interest10.47% Total Payment Rate13.35% Total Principal Balance$57,190,978,436.47 Investor Participation Amount$500,000,000.00 Seller Participation Amount$5,990,287,874.98