Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-F KEY PERFORMANCE FACTORS January 31, 2001 Expected B Maturity 9/15/05 Blended Coupon 6.6762% Excess Protection Level 3 Month Average 4.51% January, 2001 6.37% December, 2000 0.56% November, 2000 6.60% Cash Yield19.78% Investor Charge Offs 4.73% Base Rate 8.68% Over 30 Day Delinquency 4.88% Seller's Interest11.58% Total Payment Rate14.47% Total Principal Balance$57,905,967,832.59 Investor Participation Amount$500,000,000.00 Seller Participation Amount$6,705,277,271.10