Will the R4041S handle dense porcelain for a small remodel without stalling?
No — the R4041S handles dense porcelain for a small remodel only at the easier end of the 1 to 1.5 hp range, because it states 1.2 HP.
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Can the CRAFTSMAN V20 Cordless Sliding Miter Saw make a full one-pass baseboard cut for a living room install?
V20 CMCS714M1 can make a full one-pass baseboard cut for a living room install only at the easier end of that range, because its 8-inch cross cut capacity is.
Can the XBP03Z cut 2-1/2 in. stock in one pass?
XBP03Z can cut 2-1/2 in. stock in one pass, because its cutting capacity is 2-1/2.