Attributing pipeline to a single source (Marketing, SDR, AE) oversimplifies a collaborative process. This reporting style identifies team underperformance but offers no insight into *why* it's happening or how to fix it, rendering it strategically useless for scaling or problem-solving.

Instead of marketing and sales running separate races with siloed KPIs, a modern GTM model measures the entire journey like a relay. Both teams are measured on how efficiently accounts move through the funnel, focusing on the quality of handoffs and collaborative impact on velocity.

Top-performing companies are abandoning traditional metrics like MQLs. They now focus on understanding the entire prospecting process—from lead creation to BDR/SDR engagement—to generate stronger pipeline, higher win rates, and more revenue with less wasted effort.

In B2B sales with multiple decision-makers, tracking individual MQLs is a "lazy metric" that misrepresents buying intent. Success depends on identifying and engaging the entire buying group. Marketing's goal should be to qualify the group, not just a single lead.

Ditch MQLs. For sales-led motions, measure marketing on qualified pipeline (deals converting at >25%). For PLG motions, measure 'activated signups,' where users hit their 'aha moment.' This aligns marketing with quality and revenue, not volume.

MQLs should function as internal signals for the marketing team to orchestrate the next step in the buyer's journey, such as triggering a new automation. They are a delivery system within marketing, not a basket of leads to be handed to sales, which prevents sales from chasing low-quality signals.

Jon Miller calls measuring marketing-sourced vs. sales-sourced pipeline a "terrible KPI." He argues it’s impossible to do accurately due to the complex buyer journey. More importantly, it actively undermines the collaboration required for GTM success by creating a culture of credit-taking instead of teamwork.

The 95/5 rule suggests most B2B buyers aren't actively buying. "Sourced pipeline" is a harvesting metric that only measures the 5% who are in-market. This myopic focus ignores marketing's more strategic role: building brand preference with the other 95% of future buyers.

Relying on outdated metrics like "marketing sourced" or "SDR sourced" pipeline creates departmental silos and credit disputes. This flawed measurement system prevents teams from understanding the true sequence of events and collaborative patterns that actually lead to conversions.