Exhibit (c)(6)

Deferred Tax Liability

Wesco’s Common Equity Portfolio (All Data as of 1/4/2011)

($ in millions, except per share data)

Stock

Current Value

Current Deferred Tax Liability

Illustrative Range For Present Value of Deferred Tax Liability

Illustrative Range For Difference Between Current and Present Value

Aggregate

Per Wesco Share (3)

Low Mid High Low Mid High Low Mid High

Coca-Cola

(1)

Coca-Cola

$460.2 $146.8 $115.0 $71.2 $21.8 $31.8 $75.6 $125.0 $4.46 $10.62 $17.56

Sub-Total $460.2 $146.8 $115.0 $71.2 $21.8 $31.8 $75.6 $125.0 $4.46 $10.62 $17.56

(2)

P & G $405.3 $11.5 $10.9 $9.9 $8.6 $0.5 $1.5 $2.9 $0.08 $0.22 $0.40

(2)

Wells Fargo 400.2 6.1 5.8 5.3 4.6 0.3 0.8 1.5 0.04 0.12 0.21

(2)

Kraft 316.0 (3.4) (3.3) (3.0) (2.6) (0.2) (0.5) (0.9) (0.02) (0.06) (0.12)

Other Common Equities

US Bancorp (2) 267.6 0.2 0.2 0.2 0.2 0.0 0.0 0.1 0.00 0.00 0.01

(2)

American Expres 85.4 23.6 22.4 20.4 17.7 1.1 3.2 5.9 0.16 0.45 0.82

Johnson & John (2) 9.1 0.1 0.1 0.1 0.1 0.0 0.0 0.0 0.00 0.00 0.00

Sub-Total $1,483.6 $38.0 $36.2 $32.9 $28.5 $1.8 $5.1 $9.4 $0.25 $0.72 $1.33

Gillette

(2)

Gillette n.a. $116.4 $110.8 $100.7 $87.4 $5.5 $15.7 $28.9 $0.78 $2.20 $4.06

Sub-Total n.a. $116.4 $110.8 $100.7 $87.4 $5.5 $15.7 $28.9 $0.78 $2.20 $4.06

Total $1,943.8 $301.2 $262.0 $204.8 $137.8 $39.1 $96.4 $163.4 $5.50 $13.54 $22.95

Note: Analysis excludes deferred tax liabilities associated with Goldman Sachs warrants

(1) Assumptions: Low = 5-year holding period at 5.0% discount rate; Mid = 10-year holding period at 7.5% discount rate; High = 20-year holding period at 10.0% discount rate (2) Assumptions: Low = 1-year holding period at 5.0% discount rate; Mid = 2-year holding period at 7.5% discount rate; High = 3-year holding period at 10.0% discount rate (3) Based on 7,119,807 shares outstanding as of 11/5/2010 Source: Company management

Deferred Tax Liability

Wesco’s Common Equity Portfolio (All Data as of 1/4/2011)

($ in millions, except per share data)

Stock

Current Value

Current Deferred Tax Liability

Illustrative Range For Present Value of Deferred Tax Liability

Tax Rate Recalculated Based on Present Value

Low Mid High Low Low High

Coca-Cola

(1)

Coca-Cola $460.2 $146.8 $115.0 $71.2 $21.8 27.4% 17.0% 5.2%

(2)

P & G $405.3 $11.5 $10.9 $9.9 $8.6 33.3% 30.3% 26.3%

(2)

Wells Fargo 400.2 6.1 5.8 5.3 4.6 33.3% 30.3% 26.3%

(2)

Kraft 316.0 (3.4) (3.3) (3.0) (2.6) 33.3% 30.3% 26.3%

Other Common Equities

(2)

US Bancorp 267.6 0.2 0.2 0.2 0.2 33.3% 30.3% 26.3%

(2)

American Express 85.4 23.6 22.4 20.4 17.7 33.3% 30.3% 26.3%

(2)

Johnson & Johnson 9.1 0.1 0.1 0.1 0.1 33.3% 30.3% 26.3%

Gillette

(2)

Gillette n.a. $116.4 $110.8 $100.7 $87.4 33.3% 30.3% 26.3%

Note: Analysis excludes deferred tax liabilities associated with Goldman Sachs warrants

(1) Assumptions: Low = 5-year holding period at 5.0% discount rate; Mid = 10-year holding period at 7.5% discount rate; High = 20-year holding period at 10.0% discount rate (2) Assumptions: Low = 1-year holding period at 5.0% discount rate; Mid = 2-year holding period at 7.5% discount rate; High = 3-year holding period at 10.0% discount rate Source: Company management